Enter your EV's Miles per kWh (mi/kWh) — or your Distance Travelled and Energy Used (kWh) — along with your Electricity Price per kWh, and this kWh per 100 Miles Calculator gives you your kWh/100 mi efficiency rating, Cost per 100 Miles, and projected Annual Energy Cost based on 12,000 miles per year.
kWh per 100 Miles
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Actual Efficiency (mi/kWh)
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Cost per 100 Miles
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Annual Energy Cost (12k miles/year)
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kWh per 100 miles measures how much electrical energy an electric vehicle consumes to travel 100 miles. It's the inverse of miles per kWh and helps compare energy efficiency between different EVs.
Use the formula: kWh per 100 miles = 100 ÷ miles per kWh. For example, if your EV gets 4 mi/kWh, then it consumes 25 kWh per 100 miles (100 ÷ 4 = 25).
Most efficient EVs consume between 20-30 kWh per 100 miles. Smaller, lighter vehicles typically achieve 20-25 kWh/100mi, while larger SUVs may use 30-40 kWh/100mi or more.
kWh per 100 miles is the electric equivalent of gallons per 100 miles for gas cars. Lower kWh/100mi numbers indicate better efficiency, similar to how higher MPG indicates better fuel economy.
Key factors include driving speed, weather conditions, use of heating/AC, terrain, tire pressure, vehicle weight, and driving style. Highway driving and cold weather typically increase energy consumption.
Drive smoothly with gradual acceleration and braking, maintain proper tire pressure, pre-condition your vehicle while plugged in, use eco-mode when available, and minimize use of heating/cooling when possible.
Miles per kWh helps you estimate driving range, calculate energy costs, compare vehicle efficiency, and plan charging stops for long trips. It's essential for understanding your EV's operating costs and performance.